National Report

NEW YORK -- The "survivors' staircase" that served as an escape route for people fleeing the World Trade Center on Sept. 11, 2001, found a permanent home at ground zero Thursday.

The 57-ton staircase was moved by crane across the trade center site to the future entrance of a museum commemorating the 2001 terrorist attacks.

The stairs were moved from their original spot at the trade center site in March . Another leg of the journey was completed in July.

The 37 stairs had stood for years as the last remaining above-ground remnant of the original trade center complex.

Eventually, the stairs will be part of the entrance pavilion to the below-ground museum, expected to open in 2012. Visitors won't be able to use the stairs but will see them as they descend a parallel stairway from street level into the museum.

9 states, Virgin Islands get suspicious envelopes

COLUMBIA, S.C. -- Nine more states and the U.S. Virgin Islands have intercepted envelopes sent to government offices containing suspicious powder.

On Thursday the letters arrived in Florida, Georgia, Kansas, New Mexico, North Dakota, South Carolina, Tennessee, Utah, and Wyoming.

Letters in several of the states led to office shutdowns or evacuations.

Tests indicate the powder found in Florida, Georgia, Kansas, North Dakota and Utah isn't harmful. Virgin Islands officials determined the powder there was corn starch.

Tests were pending in the other states.

Envelopes containing suspicious powder have already been received in a dozen other state capitals this week.